~dricottone/pkgbuilds

ref: 36a1f594907069e45eb2965304ee0a3847ae6780 pkgbuilds/r-generics d---------
Added r-lubridate
Initial commit

A long journey to packaging r-tidyverse. The current highest-level
packages that are successfully built are dtplyr, waldo, callr, and xml2.
A handful of others (brio, digest, praise, units, zeallot) are currently
freestanding but will become dependencies soon.